Bearing for electromagnetic sparking machines.



G. HONOLD. BEARING FOB. ELECTROMAGNETIC SPAHKING MACHINES. APPLICATION FILED FEB. 12, 1908.

1,130,904, Patented Mar. 9, 1915.

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Final on nosnza'r ELECTEQSLQEGI-IEEH] SI AEKING HACHXNES.

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Patented Mar. 9, was.

Application February 1}}, i583. Ho. 315,488.

To all whom it may concern:

c lmown that l, Go'macs Honcho, a ct of she German Emperor, residing at oppenlaussrasse, Stuttgart, Germany, are invented certain new and useful improvements in Bearings for Electromagresic Sparking Machines; and I do hereby declare ibhe following to be a full, clear, and exact description of the inveuiion, such as will enable others skilled in the art so which apperiains to make and use the same. The invent-ion. relates to electromagnetic sparking" machines in Whi h the body of she machine constitutes the magnet poles. Wish these machines, during each short circuit a part of the current flows through izhe hearing surfaces the armature and distributor shafts, eren when slip brushes, supposed transmit the current, are arranged beeween the rotaiing stationary parts in the usual manner. Thus the disturbing influs has not far, and when comparison is made bcawc on the working of sparking machines, it "s found be a great disadvaniage.

The present invention at removing this disadvantage and consists essentially in the arrangement of a layer of insulating; material separating the shaft or bearing from the body of the machine; the usual slip brushes for eransmiiting she current being retained as leastone of the armature beari 7 of the device.

in the accompanying drawings Figures 1 and 2 show sections through machines embodying the invention, which of course can e varied in many ways and is especially applicable to ball bearings.

In both forms the hearing for the driving side of the sparking machine armature is shown, without the current transmitting slip brushes since these as alrea ily stated are only necessary at one of the armature bearlugs and as a rule the back one is chosen for this purpose: moreover, the brushes and their details are known and do not form -part of the invention.

y, In 1 is the journal and I) Z) the bush which is completely insulated from the rest oi the bearing (1 by the insulating layer 0 0, suitable spaces being left in these parts for she wick lubricator e.

2 ihe journal is insulated "from the layer c 0" between them, which sleeve robabes with she shaft, its outer surface forming the frictional surface.

slaving now particularly described and.

ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is:

1. In an electromagnetic machine, the combination of the machine body having a bearing, an armature shaft having a journal rotatably supported in the bearing, a bushing arranged between the journal and bearingand in fined relation to one of these parts, and an insulating layer disposed be tween the bushin and such part.

. 2. in an electromagnetic macljjne, the combination of the machine body; aving a bearing, an armature shaft having a journal rosatahly supported in the beari g, a bushing arranged between the journal and hearing and in fixed relation to the bearing, and an insulating layer disposed between the bushing and bearin 3. in an electromagnetic machine, the

combination with the machine body ha /in 7 s D a bearing, of an insulating layer lining the bearing, a bushing within the insulating layer, said bushing and insulating layer being fixed relative to the bearing, and an armature shaft having a journal rotatable in the said bushing,

-l. In an electromagnetic machine, the combination of a machine body having a bearing. an. armature frame rotatably mounted within the body and out o1 elec- -tric'al contact therewith. said frame having its aXle formed integral therewith and journaled in the bearing. a bushing arranged between the journal and bearing and in fixed relation to one of the parts. and an insulating layer disposed between the bushing and such part whereby to insulate the frame from the body.

In testimony whereof I have hereunto af- .GOTTLOB HOXOLD.

Witnesses REIXHOLD Enwnm". ERNST UTAH-III. 

